Kimi K2 and when "DeepSeek Moments" become normal

I don't quite understand what is going in China; why are these private companies (Deepseek, Alibaba, Moonshot, Bytedance) releasing models, which have been very costly to develop, for free? Is there some of sort of government mandate behind this. I understand it from a societal perspective where you want the value created by artificial intelligence to be as high possible; and you do that by dispersing it across as many uses as possible and encouraging openess between providers.

So I guess a mandate would make sense in a communist society.

I do the understand the US tech perspective on AI: A winner-takes-all game and a rush to create this single dominant AGI which all others would have to be connected to. The spoils for the winner in this game would be off the charts. And releasing something as open source in that world, beyond annoying your competitors, would make little sense.